Archive for the ‘waste management’ Category

Bokashi in School Waste Management (New Zealand)

September 7, 2009

School stories on waste education  (Nelson City Council, New Zealand)

A bokashi victory              September 2009

Two years ago Victory school had a problem with the large amount of fruit scraps, generated as a result of their involvement in the Fruit in Schools Programme, run by the District Health Board. This programme provides free fruit to students at school every day to boost the children’s nutrition levels.

large-scale bokashi system  provided the answer to their fruit scrap problem. This system takes care of citrus and other fruit scraps, as well as ham sandwiches and all kinds of lunch time food scraps not suitable for other systems.

Nelson City Council donated two large 120-litre drums to the school for use as large-scale bokashi containers. One drum is used at a time and is dug down into the ground in a suitable spot within the school garden. The soil removed to create a hole for the drum is piled around the base and is used to cover the bokashi mix once the hole is full and the drum is removed. This part of the garden is then planted after a couple of weeks. The drums are rotated around the sites in the garden on a regular basis.

Selected senior students are on collection duty for the term. They collect fruit scraps in buckets at the end of the school day and carry them over to the big bokashi drum in the community garden. They usually get about six full buckets of scraps from a total of 18 collection buckets located in each classroom. The students tip the buckets into the drum, pack the food scraps down, and sprinkle in a handful of bokashi compost-zing on top, before making sure the lid is put back on tightly. The school funds the ongoing cost of the compost-zing activator for their bokashi system.

“Before we had the bokashi system, we were having a big problem as there were just too many fruit scraps and our compost bin was overflowing. Also the type of waste was not suitable for composting – some days we just had banana skins, other days too much orange peel. The bokashi system makes it easy,” says teacher Judy-Anne.

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Bokashi Experiment (Nicaragua)

November 19, 2007

Evaluation of composting as a strategy for managing organic wastes from a municipal market in Nicaragua

Montserrat Aulinas Maso´ , August Bonmatı Blasi *

Laboratory of Chemical and Environmental Engineering, University of Girona, Campus Montilivi, s/n, 17071 Girona, Spain

Abstract 

A pilot-scale study was undertaken to evaluate alternatives to the solid waste management of a Central American municipal market located in Estelı ´, Nicaragua. The municipal solid waste from the local market is the second largest contributor to the municipal solid waste (MSW) stream. Waste from the market without any previous sorting or treatment is open dumped. The options evaluated in this study were windrow composting, windrow composting with yard waste, bokashi and vermicompost. Significant differences between the properties of composts produced were found; however, all of them reduce the initial waste volume and are potential useful agronomic products for a survival agrarian milieu. 

(…)

Bokashi (Bk): A layer of organic wastes from the market, a layer of cattle manure (coming approximately to 170 kg of organic wastes), a thin layer of vegetal coal and a thin layer of rice husk (2.3 kg each), all of them watered with yeast and sugar from cane dissolved in water. This procedure was repeated three times and materials were turned over frequently.

[The document includes a table comparing the 4 options evaluated]

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